Osaka Popstar is a punk rocksupergroup formed in 2006 by New Yorker John Cafiero. In 2006, Cafiero teamed up with several well known punk rock artists to create the anime based punk group, Osaka Popstar. They released their debut album/DVD on May 23, 2006. Their lyrics consist of topics such as characters in Japanese anime like Astroboy and Sailor Moon. The first single off the album was a cover of singer/song writer Daniel Johnston, entitled "Wicked World."

Their album was released in Japan in June 2007. In 2008, they released a live EP, which was recorded on Halloween night 2006 on the Fiend Fest. In 2012, Cafiero, backed by the band Juicehead and credited to Osaka Popstar X Juicehead, released a cover of Fugazi's "Waiting Room". In 2013, the band will release another single, "Super Hero".